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  2. List of the most common passwords - Wikipedia

    en.wikipedia.org/wiki/List_of_the_most_common...

    Since 2011, the firm has published the list based on data examined from millions of passwords leaked in data breaches, mostly in North America and Western Europe, over each year. In the 2016 edition, the 25 most common passwords made up more than 10% of the surveyed passwords, with the most common password of 2016, "123456", making up 4%. [5]

  3. Combination lock - Wikipedia

    en.wikipedia.org/wiki/Combination_lock

    A Wordlock letter combination lock.. A combination lock is a type of locking device in which a sequence of symbols, usually numbers, is used to open the lock. The sequence may be entered using a single rotating dial which interacts with several discs or cams, by using a set of several rotating discs with inscribed symbols which directly interact with the locking mechanism, or through an ...

  4. Personal identification number - Wikipedia

    en.wikipedia.org/wiki/Personal_identification_number

    Financial PINs are often four-digit numbers in the range 0000–9999, resulting in 10,000 possible combinations. Switzerland issues six-digit PINs by default. [31] Some systems set up default PINs and most allow the customer to set up a PIN or to change the default one, and on some a change of PIN on first access is mandatory.

  5. Password strength - Wikipedia

    en.wikipedia.org/wiki/Password_strength

    Typically, humans are asked to choose a password, sometimes guided by suggestions or restricted by a set of rules, when creating a new account for a computer system or internet website. Only rough estimates of strength are possible since humans tend to follow patterns in such tasks, and those patterns can usually assist an attacker. [4]

  6. There's a secret code thieves use to break into hotel room safes

    www.aol.com/lifestyle/apos-secret-code-thieves...

    He closes the door to the safe, inputs a 4-digit passcode followed by "lock." It's locked and the user is unable to unlock the safe with any other 4-digit number. Related: Annoy these hotel.

  7. Card security code - Wikipedia

    en.wikipedia.org/wiki/Card_security_code

    A card security code (CSC; also known as CVC, CVV, or several other names) is a series of numbers that, in addition to the bank card number, is printed (but not embossed) on a credit or debit card. The CSC is used as a security feature for card not present transactions, where a personal identification number (PIN) cannot be manually entered by ...